Bob:

The annoyance must have to do with your dual monitor system.
I tried the Memo button on the Leadsheet window here, on 3 different computers, running 3 different O/S's and 3 different sized monitors.

They all displayed across the entire screen but didn't "exceed the monitor".

It is strange though, not to have that resizing capability.
Maybe an item for the Wish List.

Good luck!
LLOYD S